Long-term ditch-buried straw return alters soil water potential, temperature, and microbial communities in a rice-wheat rotation system

Yang, Haishui; Feng, Jiguang; Zhai, Silong; Dai, Yajun; Xu, Mei‐Ling; Wu, Junsong; Shen, Mingxing; Xin-min, Bian; Koide, Roger T.; Liu, Jian

doi:10.1016/j.still.2016.05.003

Cited by 84 publications

(60 citation statements)

References 30 publications

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“…However, the rate declined with increase in mannitol concentration treatment. Similar results have been reported in other plant species such as maize (Liu et al (2015), wheat (Yang et al, 2016) and sunflower (Ahmad et al, 2009). Seed germination process is divided into three successive stages: inhibition, metabolism that leads initiation of radicle growth, and radicle growth which primes radicle emergence.…”

Section: Discussionsupporting

confidence: 88%

Differential characterization of physiological and biochemical responses during drought stress in finger millet varieties

Mukami

Ngetich

Mweu

et al. 2019

Preprint

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Drought is the most perilous abiotic stress that affects finger millet growth and productivity worldwide. For the successful production of finger millet, selection of drought tolerant varieties is necessary and critical stages under drought stress, germination and early seedling growth, ought to be fully understood. This study investigated the physiological and biochemical responses of six finger millet varieties (GBK043137, GBK043128, GBK043124, GBK043122, GBK043094 and GBK043050) under mannitol-induced drought stress. Seeds were germinated on sterile soil and irrigated with various concentrations of mannitol (200, 400 and 600 mM) for two weeks. Comparative analysis in terms of relative water content (RWC), chlorophyll, proline, and malondialdehyde (MDA) contents were measured the physiological and biochemical characteristics of drought stress. The results showed that increased level of drought stress seriously decreased germination and early seedling growth of finger millet varieties. However, root growth was increased. In addition, exposition to drought stress triggered a significant decrease in relative water content and chlorophyll content reduction the biochemical parameters assay showed less reduction of relative water content. Furthermore, oxidative damage indicating parameters such as proline concentration and MDA content increased. Varieties GBK043137 and GBK043094 were less affected by drought as shown by significant change in the physiological parameters. Our findings reveal the difference and linkage between the physiological responses of finger millet to drought and are vital for breeding and selection of drought tolerant varieties of finger millet. Further investigations on genomic and molecular to deeply insight the detail mechanisms of drought tolerance in finger millet need to explored.

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Section: Discussionsupporting

confidence: 88%

Differential characterization of physiological and biochemical responses during drought stress in finger millet varieties

Mukami

Ngetich

Mweu

et al. 2019

Preprint

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“…Many studies have reported that straw return could alter the soil microbial distribution, and soil microbes determine nutrient turnover, transformation, and cycling in fields [3,36]. Our study suggests that straw return generated greater fungal diversity and similar bacterial diversity compared with CK.…”

Section: Soil Microbial Communitymentioning

confidence: 52%

“…Under such intensive cropping systems with large amounts of crop straw produced, straw incorporation into the soil has become a major crop residue disposal [2]. However, the straw-return method is important for specific regional ecological conditions and cropping systems [3], which may result in positive or negative effects on soil fertility and environment [4]. Therefore, great effort should be made to explore a suitable straw-return method and understand its effect on soil quality and crop yields in the maize-rice cropping system.…”

Section: Introductionmentioning

confidence: 99%

Effects of Straw-Return Method for the Maize–Rice Rotation System on Soil Properties and Crop Yields

Han

Zhou

et al. 2020

Agronomy

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Exploring suitable maize straw-return measures is essential for the new double-cropping system of maize (Zea mays L.)–rice (Oryza sativa L.) rotation in the middle reaches of Yangtze River in China, which can increase crop yield by improving soil quality. In this study, four straw-return measures were evaluated by investigating the soil bulk density (BD), organic matter (OM), microbial community, and nutrients from 2016 to 2018. The four straw-return treatments were as follows: (1) no straw-return (CK), (2) only rice straw incorporated into the field (M0Ri), (3) both maize and rice straw incorporated to field (MiRi), and (4) maize straw mulched and rice straw incorporated into the field (MmRi). Compared to CK, two-season crop straw-return treatments changed soil microbial community composition, and increased soil total organic carbon (TOC) and dissolved organic carbon (DOC), microbial biomass carbon (MBC), mineralized nitrogen (Nmin), available phosphorus (P) and exchangeable potassium (K) in the 0–20 cm soil layer by 3.6%, 63.4%, 38.8%, 12.4%, 39.7%, and 21.6%, respectively, averaged across MmRi and MiRi treatments. In addition, MmRi and MiRi increased annual yield by 9.1% and 15.2% in 2017 and 11.7% and 12.9% compared to CK in 2018, respectively. MmRi exhibited superiority in the soil microbial community, enzyme activities, DOC, MBC, Nmin, available P, and exchangeable K in contrast to MiRi. We concluded that MmRi is the best measure to implement for straw-return in maize–rice rotation systems.

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“…Furthermore, intensified straw application significantly reduces evapotranspiration at the grain-filling to the maturity stages, and significantly increases surface SM at the grain-filling stage and considerably improves rainfall-use efficiency (RUE) during the whole growth period [20]. However, in another study, ditch-buried straw return decreases SM, but increases mean ST in a humid, mid-subtropical monsoon climate and increases soil microbial activity [21]. In addition, the positive effects of residue incorporation on water balance and crop yield are more pronounced at dry sites than at wet sites.…”

Section: Introductionmentioning

confidence: 88%

“…Furthermore, SA increases soil organic matter, decreases soil bulk density, reduces the stability of aggregates, water infiltration, saturated/unsaturated hydraulic conductivity, and air permeability, and thereby increases soil and water loss; SA changes the dynamics of SM and ST, and influences the activity of microbe and nutrient transformation [3]. However, most studies evaluating the impacts of straw amendment on soil physicochemical properties have been mainly carried out on flat or sloping plots [12,21,24], while the precise impacts of straw amendment in fields with consecutive slopes remain unknown.…”

Section: Introductionmentioning

confidence: 99%

Influence of Straw Amendment on Soil Physicochemical Properties and Crop Yield on a Consecutive Mollisol Slope in Northeastern China

Zhang

Wang

Shen

2018

Water

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Straw amendment (SA) can be used to increase soil organic matter and decrease dioxide carbon emissions. However, the impact of SA on the crop yield is still subject to debate in different areas. In this study, soil temperature (ST), soil moisture (SM), soil bulk density, soil-available-nitrogen (AN), soil-available-phosphorus (AP), crop growth and yield were measured in SA and NSA (no straw amendment) at slope positions of a 130-m-long consecutive Mollisol slope during the maize (Zea mays) growth stages in the North Temperate Zone of China. Compared with NSA, the influence of SA on ST and SM was not consistent, while AN typically increased on the top slope. However, SA conventionally increased AP, increased daily ST and monthly ST (2.4-7.9%), and increased daily SM and monthly SM (2.1-12.5%) on the back slope. SA increased crop yield by 1-9.8% and 55.6-105.1% on the top and back slopes, respectively. At the bottom, SA conventionally decreased ST (0.20-1.48 • C in July and August), SM (3.5-29.6% from May to August), AN and AP, and decreased crop yield (4.1-30.6%). In conclusion, SA changed the equilibrium of ST and SM, influenced the dynamics of AN and AP on the consecutive slopes, and increased yield on both the top and back slopes but decreased yield at the bottom.

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Long-term ditch-buried straw return alters soil water potential, temperature, and microbial communities in a rice-wheat rotation system

Cited by 84 publications

References 30 publications

Differential characterization of physiological and biochemical responses during drought stress in finger millet varieties

Differential characterization of physiological and biochemical responses during drought stress in finger millet varieties

Effects of Straw-Return Method for the Maize–Rice Rotation System on Soil Properties and Crop Yields

Influence of Straw Amendment on Soil Physicochemical Properties and Crop Yield on a Consecutive Mollisol Slope in Northeastern China

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